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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






2. Front feet and head first. (except for hogs and dogs)






3. What helps regulate spermatogenesis?






4. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






5. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






6. Luteolysis happens because of the ____________ hormone






7. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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8. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






9. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






10. Birthing process (termination of gestation)






11. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






12. Produce testosterone. located between the seminiferous tubules






13. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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14. 1-2 days






15. Larger the cow - more milk is produced; smaller the cow - less milk is produced






16. ~305 days (altough often longer due to breeding difficulties)






17. Why Dairy calves are fed powdered milk.






18. Animal which has been castrated after puberty






19. Start of the reproductive tract for the female. located outside of the body






20. To remove/separate testicles from animal's body before animal reaches puberty






21. 114 days






22. Sperm is produced here






23. (LH) causes female's egg to break (her period)






24. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






25. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






26. (switzerland) 2nd in size and milk production - most muscle -






27. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






28. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






29. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






30. Days which have increasing daylight hours

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31. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






32. Animals which have many estrous periods per year (ex: cow - sow)






33. 26 hours after estrus begins






34. 147 days






35. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






36. 283 days






37. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






38. To remove/separate testicles from animal's body before animal reaches puberty






39. Male on one pin and female on other side






40. Why does estrus happen before ovulation?






41. Animals which have only one estrous cycle (ex: dog - fox)






42. 45-60 days after breeding; re-breed as required






43. Duct through penis that carries sperm and urine






44. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






45. FEED






46. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






47. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






48. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






49. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






50. Failure to have one testis (gonad) to descend







Sorry!:) No result found.

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